Inspecting cooling system for leaks

AR20.00-P-1010GZC

Inspecting cooling system for leaks

22.6.11



Checking

 Danger!

Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by swallowing coolant.

Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.

Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

1

Unscrew cap for coolant expansion reservoir (1)

 Unscrew cap slowly and relieve excess pressure.

2

Check coolant level and antifreeze content of coolant and correct if necessary

 If the antifreeze protection for the coolant is too small, either antifreeze must be added or the coolant must be replaced: 

Drain coolant, fill.

Model 164, 251

AR20.00-P-1142GZC

Model 463

AR20.00-P-1142GX



Coolant specifications

Sheet 310.1

BB00.40-P-0310-01A



Anticorrosion/antifreeze agents (Sheet 325.0)

Sheet 325.0

BB00.40-P-0325-00A

3

Screw test cap (2) onto coolant expansion reservoir (1).



*210589009100

4

Connect pressure pump (3) at tester cap (2)



*124589242100

5

Apply test pressure to cooling system

 To prevent damage to cooling system, do not exceed stated test pressure.

*BE20.30-P-1005-01A

6

Check hose clamps for condition and seating

 Tighten hose clamps as necessary; replace if necessary.

7

Check coolant hoses and heater hoses and their connecting points for condition and coolant loss

 Replace coolant hoses and heater hoses if required.

8

Unscrew test cap (2) at coolant expansion reservoir (1).

 Unscrew test cap (2) slowly and relieve excess pressure.

9

Remove pressure pump (3) from test cap (2)

10

Screw cap onto coolant expansion reservoir (1)

Number

Designation

2-stage
cap

BE20.30-P-1005-01A

Test pressure for pressure-testing cooling system

bar gage

1.4